International Journal of Electrochemical Science最新文献

{"title":"NaCl as an effective additive for enhancing the electrochemical activity of positive electrolyte for vanadium redox flow battery","authors":"Xiaolong Li ,&nbsp;Yanfeng Liu ,&nbsp;Gang Huang ,&nbsp;Heng Zuo ,&nbsp;Ziyi Chen","doi":"10.1016/j.ijoes.2025.101035","DOIUrl":"10.1016/j.ijoes.2025.101035","url":null,"abstract":"<div><div>The concentration of electrolyte for vanadium battery is related to its energy density and total energy storage. Thus, the preparation of vanadium electrolyte with high concentration can contribute to improve the energy storage of vanadium battery. Nevertheless, the low solubility of V(Ⅴ) and the low stability at relatively high temperatures limit the further enhancement of the concentration of electrolyte. Thus, it is of importance to keep stability of V(Ⅴ) and enhance the electrochemical activity of electrolyte. Besides, adding additives is an important way to improve the ion stability and electrochemical activity of vanadium battery electrolyte. In this paper, several common chlorides of metal ions are chosen as additives to add into the positive electrolyte of vanadium battery. In addition, the electrochemical activity, stability and dynamic behaviors of the electrolyte were studied using the electrochemical technology such as cyclic voltammogram and electrochemical impedance spectroscopy, and so on. The results showed that the addition of NaCl, FeCl₃ and MgCl₂ as additives could obviously enhance the electrochemical activity of the positive electrolyte for vanadium battery. Compared with other additives, on the premise of not affecting the stability of the electrolyte, the electrolyte with 0.02 mol/L NaCl as an additive had the highest redox peak current. Moreover, the diffusion coefficient of the active substance is more than 2 times than that of the electrolyte without additive. Hence, the electrolyte with 0.02 mol/L NaCl as an additive displays the highest electrochemical activity.</div></div>","PeriodicalId":13872,"journal":{"name":"International Journal of Electrochemical Science","volume":"20 7","pages":"Article 101035"},"PeriodicalIF":1.3,"publicationDate":"2025-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143859070","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Cyanthillium cinerium(L.) extract as green corrosion inhibitor for mild steel in acidic medium: Electrochemical and computational study","authors":"Venkata Kanaka Rao Pulapa ,&nbsp;Mastan Rao Kotupalli","doi":"10.1016/j.ijoes.2025.101020","DOIUrl":"10.1016/j.ijoes.2025.101020","url":null,"abstract":"<div><div>The present study aims to elucidate the corrosion inhibition efficacy of <em>Cyanthillium cinerium(L.) H.Rob</em>. as a green inhibitor on 5LX70 mild steel (MS) in 1 M HCl medium by electrochemical impedance spectroscopy (EIS), potentiodynamic polarization (PDP), scanning electron microscopy (SEM), and density functional theory (DFT). The EIS results yielded 88.12 % inhibition efficiency at 600 ppm of inhibitor concentration with a uniform corrosion mechanism while the polarization results achieved 85.73 % of efficiency. The shift of corrosion potential from blank to the highest inhibitor concentration was found to be less than 85 mV suggesting mixed type behavior of the inhibitor. The addition of inhibitor to the aggressive solution produced an increase of 374.1 Ωcm² charge transfer resistance at the electrolyte/electrode interface and a decrease of 17.78 µAcm⁻² corrosion current in polarization studies; this confirmed the protective ability of the inhibitor on MS surface. The SEM results confirmed the surface coverage by the inhibitor on the metal surface. Quantum chemical parameters obtained by DFT simulations suggested that the inhibitor molecules could chelate with metal atoms and further Mulliken charges and Fukui indices indicated the local reactive descriptors. Monte Carlo simulations provided energy profiles that are indicative of chemical adsorption on the Fe (1 1 0) surface. This study demonstrates that <em>Cyanthillium cinereum</em> is a promising green corrosion inhibitor for mild steel, offering an eco-friendly and sustainable solution.</div></div>","PeriodicalId":13872,"journal":{"name":"International Journal of Electrochemical Science","volume":"20 7","pages":"Article 101020"},"PeriodicalIF":1.3,"publicationDate":"2025-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143843938","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Quality assessment of Bupleurum chinense by coupling Belousov-Zhabotinsky oscillation with principal component analysis","authors":"Na Wang ,&nbsp;Feng Li ,&nbsp;Xiaodong Fan","doi":"10.1016/j.ijoes.2025.101033","DOIUrl":"10.1016/j.ijoes.2025.101033","url":null,"abstract":"<div><div>This study established a comprehensive analytical methodology utilizing Belousov-Zhabotinsky (B-Z) oscillation patterns coupled with principal component analysis for quality evaluation of medicinal herb extracts. The optimized system employed a two-electrode configuration with platinum working electrode (d = 2.0 mm) and demonstrated characteristic temporal evolution across three distinct phases. Systematic parameter optimization revealed optimal conditions including H₂SO₄ (3.0 mol/L), malonic acid (0.4 mol/L), and KBrO₃ (0.3 mol/L) concentrations. High-quality samples exhibited distinctive oscillation characteristics including maximum amplitudes of 0.09–0.14 V and mean oscillation periods between 16 and 23 seconds, with amplitude decay following pseudo-first-order kinetics (decay constants 2.3 ×10⁻³ to 3.8 ×10⁻³ s⁻¹). The analytical method showed excellent precision with relative standard deviations below 4 % for key parameters, particularly peak potentials (RSD = 1.7 %). Hierarchical cluster analysis initially revealed three distinct quality clusters; however, by further integrating quantitative oscillation parameters (e.g., ΔEₘₐₓ, induction time, and oscillation lifetime) and their correlations with traditional quality markers, these clusters were refined into five quality grades, thereby providing a more detailed evaluation framework. The method's robustness was confirmed through stability testing, showing minimal sensitivity to temperature variations ( ± 2°C) and reagent concentration fluctuations ( ± 2 %). Analysis of 30 samples from three geographical origins demonstrated clear regional quality patterns, with Q2 values of 0.85 and 0.78 for PC1 and PC2 respectively, enabling reliable geographical source discrimination.</div></div>","PeriodicalId":13872,"journal":{"name":"International Journal of Electrochemical Science","volume":"20 7","pages":"Article 101033"},"PeriodicalIF":1.3,"publicationDate":"2025-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143843940","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Graphene-enabled electrochemical fingerprint profiling for differentiating authentic and adulterated honeysuckle (Lonicera japonica)","authors":"Liujing Wan ,&nbsp;Mengxuan Wang ,&nbsp;Xiaofeng Liang ,&nbsp;Xingfei Wu ,&nbsp;Lei Yu ,&nbsp;Xue Tian","doi":"10.1016/j.ijoes.2025.101032","DOIUrl":"10.1016/j.ijoes.2025.101032","url":null,"abstract":"<div><div>This study presents a novel sensing platform that integrates modified electrodes with advanced computational analysis for rapid quality assessment of honeysuckle (<em>Lonicera japonica</em>) and other herbal products. A cost-effective electrode was prepared by drop-casting 10 µL of a 5 % nanomaterial ink onto a 0.126 cm² screen-printed electrode, followed by a 2-h drying process at ambient temperature. Differential pulse voltammetry measurements conducted in 0.1 M PBS (pH 7.0) and ABS (pH 4.5) yielded distinct oxidation peaks; high-quality samples exhibited peaks at approximately 0.48 V in PBS and 0.42 V in ABS, whereas substandard specimens produced broader signals at around 0.52 V and 0.46 V, respectively. An optimized extraction protocol using 0.1 g of powdered sample in 2 mL ethanol with a 10-min sonication step ensured efficient recovery of electroactive constituents. Stability testing over a 12-h period demonstrated current fluctuations confined within ± 2 %, and reproducibility assessments across five independent electrodes revealed a variation of less than 3 %. Multivariate statistical techniques, including PCA and LDA, enabled clear separation of sample clusters, while classification algorithms—MLP, NLSVM, and RF—achieved laboratory accuracies up to 92 % and 90.3 % in large-scale market tests. These performance metrics confirm that the integrated platform can reliably discriminate complex voltammetric profiles, offering a rapid and scalable solution for on-site quality control in resource-limited environments. The proposed method provides a promising alternative to conventional approaches and holds significant potential for revolutionizing quality assurance practices in the herbal medicine industry.</div></div>","PeriodicalId":13872,"journal":{"name":"International Journal of Electrochemical Science","volume":"20 7","pages":"Article 101032"},"PeriodicalIF":1.3,"publicationDate":"2025-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143851592","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Psidium guajava L. extract as corrosion inhibitor for mild steel in an acidic environment: Experimental and computational insights","authors":"Titus Chinedu Egbosiuba ,&nbsp;Ifeanyi Emmanuel Chukwunyere ,&nbsp;Collince Omondi Awere ,&nbsp;Ndidiamaka Martina Amadi ,&nbsp;Blessing Onyinye Okafor ,&nbsp;Joseph Okechukwu Ezeugo ,&nbsp;Okechukwu Dominic Onukwuli ,&nbsp;Nadia Arrousse ,&nbsp;Elyor Berdimurodov ,&nbsp;Valentine Chikaodili Anadebe","doi":"10.1016/j.ijoes.2025.101031","DOIUrl":"10.1016/j.ijoes.2025.101031","url":null,"abstract":"<div><div>The current research investigates the inhibitory effect of <em>Psidium guajava</em> leaf extract (PGLE) on mild steel (MS) in acidic solution, thus ameliorating the high demand for development of sustainable corrosion inhibitors. Herein, <em>Psidium guajava</em> leaf extract was considered for this research owing to its inherent chemical compositions such as flavonoids, tannins and vitamins which are responsible for its antioxidants and antimicrobial activity. The methodologies used in this work integrates detailed experimental validation based on gravimetric, combined electrochemical approach alongside computational studies. The gravimetric result demonstrated that the inhibition efficiency of the extract increased with its concentration, reaching a value of 89.4 % at 0.9 g/L and 303 K which further corroborates with impedance data. However, the inhibition efficiency decreased with an increase in temperature, highlighting the thermal degradation of the extract's active constituents at elevated temperatures which led to poor surface coverage by the extract. The adsorption of <em>Psidium guajava</em> leaf extract on the mild steel surface was evaluated using three adsorption models. Evidently, the best adsorption model fit was obtained <em>via</em> the Langmuir isotherm model. This type of model entails the formation of a barrier film layer over the mild steel thereby impeding the permeation of corrosive moieties reaching the metal surface. The morphological analysis based on SEM confirmed the formation of a protective organic film on the mild steel surface. In addition, the computational studies based on Density Functional Theory (DFT) and molecular dynamics simulation (MD) unveil the active sites and adsorption orientation of the inhibitor. As evidenced from the MD studies, the <em>Psidium guajava</em> leaf extract exhibited a flat adsorption coordination over the mild steel surface, thus corroborating with the experimental findings. Thus, this study provides invaluable insights into the emergence of inhibitors derived from renewable sources and shed more light on the <em>Psidium guajava</em> leaf extract potentials, while helping to ameliorate agricultural derived waste management problems.</div></div>","PeriodicalId":13872,"journal":{"name":"International Journal of Electrochemical Science","volume":"20 7","pages":"Article 101031"},"PeriodicalIF":1.3,"publicationDate":"2025-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143847527","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Multi objective optimization of grid connected photovoltaic and V2G operation based on the influence of schedulable capacity","authors":"Yaoze Cai ,&nbsp;Hongliang Hao ,&nbsp;Zhongkang Zhou ,&nbsp;Huimin Ma ,&nbsp;Jin Zhao ,&nbsp;Zeyang Liu ,&nbsp;Qiangqiang Liao ,&nbsp;Zaiguo Fu ,&nbsp;Zhiyuan Cheng","doi":"10.1016/j.ijoes.2025.101030","DOIUrl":"10.1016/j.ijoes.2025.101030","url":null,"abstract":"<div><div>The disorderly charging of large-scale electric vehicles (EVs) connected to the power grid will lead to excessive load variance in the distribution network system. The dual attributes of load and energy storage possessed by EVs can reduce the load variance of the power grid and achieve efficient utilization of green electricity, in which EV’s scheduling capacity is an important factor affecting the application of vehicle to grid interaction. First, the Manhattan distance in Niche technology was employed to calculate the crowding degree of multi-objective particle swarm optimization (MOPSO), in order to solve the ordered charging and discharging load of EVs at different scheduling capacity in the article. Secondly, the impact of time of use (TOU) electricity pricing mechanism and incentive pricing mechanism on V2G revenue was compared. Finally, the proposed model was simulated and validated using the typical daily basic electricity load and photovoltaic power generation load curves of a certain region. The results indicate that the photovoltaic consumption rate of EVs gradually decreases, and the load variance shows a trend of first decreasing and then increasing as the EV scheduling capacity increases in the workplace. Niche technology optimizes load variance and peak load at the same scheduling capacity, resulting in reduced charging costs or increased revenue for drivers. In addition, the revenue under V2G incentive pricing mechanism is much greater than that under TOU electricity pricing mechanism.</div></div>","PeriodicalId":13872,"journal":{"name":"International Journal of Electrochemical Science","volume":"20 7","pages":"Article 101030"},"PeriodicalIF":1.3,"publicationDate":"2025-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143838151","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Inhibitory effect of novel synthesized imidazolone-derived heterocyclic compounds on mild steel corrosion in hydrochloric acid: Electrochemical, surface analysis, and theoretical studies","authors":"S. El Kaouahi ,&nbsp;N. Er-rahmany ,&nbsp;A. El Moutaouakil Ala Allah ,&nbsp;S. Yaqouti ,&nbsp;M. Nounah ,&nbsp;R. Touir ,&nbsp;H. Larhzil ,&nbsp;J. Saranya ,&nbsp;Hatem A. Abuelizz ,&nbsp;Y. Ramli ,&nbsp;A. Zarrouk ,&nbsp;E.H. El Kafssaoui","doi":"10.1016/j.ijoes.2025.101026","DOIUrl":"10.1016/j.ijoes.2025.101026","url":null,"abstract":"<div><div>This study focuses on the inhibitory effect of novel synthetized imidazolone-derived heterocyclic compounds, namely 5,5-diphenyl-2-(2-(pyridin-2-ylmethylene)hydrazineyl)-3,5-dihydro-4H-imidazol-4-one (IMID2) and (<em>E</em>)-5,5-diphenyl-2-(2-(pyridin-3-ylmethylene)hydrazineyl)-3,5-dihydro-4H-imidazol-4-one (IMID3) on mild steel (MS) corrosion in 1.0 M HCl solution using electrochemical studies, surface and elementary composition analyses with scanning electronic microscopy (SEM) coupled with energy dispersive X-ray (EDX) and theoretical studies based on Density Functional Theory (DFT) calculation and Molecular Dynamic (MD) simulations. Firstly, these products were prepared and identified using FT-IR, ¹H NMR and ¹³C NMR. Electrochemical impedance spectroscopy (EIS) results indicated that the inhibition efficiency of IMID2 and IMID3 depends on their concentrations and the –N positions in their structures. So, this inhibition efficiency reaches up to 94.85 % and 92.02 % at 10⁻³ M IMID2 and IMID3, respectively. In addition, the potentiodynamic polarization (PDP) results indicated that these compounds react as cathodic mixed-type inhibitors. Moreover, it is found that the IMID2 and IMID3 inhibitors react via Langmuir isotherm adsorption, which is a confirmed SEM/EDX examination by the establishment of a defensive layer on the MS area. The effect of the temperature solution indicated that the IMID3 and IMID2 take their performance at high temperature. The DFT calculation showed that IMID3 and IMID2 interact with MS area via their heteroatoms and aromatic rings, where IMID2 exhibits superior inhibition properties. Finally, MD simulation indicated that these molecules adopt a horizontal orientation upon adsorption, promoting optimal contact with the MS surface and confirm the performance inhibition of IMID2 than IMID3.</div></div>","PeriodicalId":13872,"journal":{"name":"International Journal of Electrochemical Science","volume":"20 6","pages":"Article 101026"},"PeriodicalIF":1.3,"publicationDate":"2025-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143830027","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Comparative analysis of electrochemical properties and thermal behaviors of sodium ion and lithium ion batteries","authors":"Han Xu ,&nbsp;Guoqing Zhang ,&nbsp;Jiantao Zhang ,&nbsp;Jiangyun Zhang ,&nbsp;Hongwei Wu ,&nbsp;Liqin Jiang ,&nbsp;Wenzhao Jiang ,&nbsp;Jun Liu ,&nbsp;Kang Peng","doi":"10.1016/j.ijoes.2025.101027","DOIUrl":"10.1016/j.ijoes.2025.101027","url":null,"abstract":"<div><div>Sodium-ion batteries (SIBs), characterized by their abundant raw material sources and cost-effective manufacturing processes, have emerged as one of the most promising battery technologies. However, the existing literature on the electrochemical and thermal generation characteristics of SIBs remains limited. This dissertation conducts a comparative investigation of the electrical-thermal properties of 18650-type SIBs and Lithium-ion batteries (LIBs) from both macroscopic and microscopic perspectives. The initial phase of the study involved conducting experiments under standard operating conditions, with variations in ambient temperatures and discharge rates. Furthermore, investigations into overcharging and thermal runaway (TR) were conducted under extreme conditions, with concurrent studies on heat generation and electrochemical analyses. The underlying mechanisms responsible for macroscopic performance variations were elucidated through microstructural characterization.</div><div>The experimental findings reveal that at an ambient temperature of 0 °C, the State of Charge (SOC) of Sodium-Ion Batteries (SIBs) exceeds that of Lithium-Ion Batteries (LIBs) by 13.93 %. Under standard operating conditions, LIBs demonstrate enhanced cyclic capacity retention relative to SIBs, albeit with higher thermal generation. Under abusive conditions, the performance of SIBs markedly deteriorates, accompanied by a substantial increase in heat generation, surpassing that of LIBs. Following abuse, SIBs experience thermal runaway, attaining a peak temperature of 273.9 °C. The performance degradation is primarily attributed to severe sodium deposition on the anode and the subsequent detachment of active materials. These findings furnish essential experimental data and theoretical underpinnings for the industrial deployment of SIBs, while providing critical insights for optimizing their production processes and improving thermal safety performance.</div></div>","PeriodicalId":13872,"journal":{"name":"International Journal of Electrochemical Science","volume":"20 6","pages":"Article 101027"},"PeriodicalIF":1.3,"publicationDate":"2025-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143825649","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Electrochemical technologies for sustainable agricultural water treatment and resource recovery","authors":"Jianan Zhan ,&nbsp;Yongkang Yao ,&nbsp;Xian Wang","doi":"10.1016/j.ijoes.2025.101029","DOIUrl":"10.1016/j.ijoes.2025.101029","url":null,"abstract":"<div><div>Electrochemical technologies are emerging as modular, low-chemical, and energy-efficient solutions for treating and valorizing agricultural water streams. This review synthesizes the state-of-the-art in six core electrochemical processes—electrocoagulation, electroflotation, electrodialysis, capacitive deionization, electrochemical advanced oxidation, and electro-reductive pathways—and evaluates their effectiveness for removing sediments, nutrients, salts, organic micropollutants, and pathogens. We compare removal efficiencies, resource-recovery yields, energy consumption, and operational challenges across bench-, pilot-, and field-scale studies. Key insights include the high phosphorus recovery (&gt;99 %) achievable via electrocoagulation, selective nitrate concentration by electrodialysis for fertilizer reuse, sub-kWh m⁻³ energy footprints of capacitive deionization for brackish irrigation water, and &gt; 99 % degradation of persistent pesticides using advanced oxidation anodes. Looking ahead, we identify three critical research priorities: (1) development of low-cost, fouling-resistant electrode materials tailored for complex agricultural matrices; (2) integration of electrochemical units with renewable energy sources and biological polishing to maximize circularity; and (3) techno-economic assessments and long-term field demonstrations to validate performance under variable on-farm conditions. Addressing these gaps will accelerate deployment of decentralized electrochemical water treatment systems—advancing nutrient circularity, safeguarding water resources, and enhancing resilience of agricultural landscapes.</div></div>","PeriodicalId":13872,"journal":{"name":"International Journal of Electrochemical Science","volume":"20 7","pages":"Article 101029"},"PeriodicalIF":1.3,"publicationDate":"2025-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143834745","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Sargassum/chitin-derived nitrogen-doped activated carbon with exceptional electrochemical performance for supercapacitors","authors":"Feifei Han ,&nbsp;Shijie Li ,&nbsp;Penghu Jing ,&nbsp;Yanhui Li ,&nbsp;Mingcheng Chang ,&nbsp;Jiarui Kou","doi":"10.1016/j.ijoes.2025.101024","DOIUrl":"10.1016/j.ijoes.2025.101024","url":null,"abstract":"<div><div>Biomass is an ideal precursor for the preparation of electrode materials due to its wide availability, renewability, and cost-effectiveness. Nitrogen-doped activated carbon enhances the electrochemical performance of electrode materials by generating additional pseudocapacitance, thereby broadening the practical applications of supercapacitors. In this study, cross-linked activated carbon was prepared through co-carbonization and KOH activation, utilizing Sargassum and chitin as raw materials. The influence of the Sargassum-to-chitin mixing ratio on the pore structure, morphology, degree of graphitization, and electrochemical properties of the resulting carbon materials was systematically investigated. The resulting Sargassum/chitin-coupled activated carbon exhibited a unique two-dimensional lamellar structure and an exceptionally high specific surface area of 3433.3 m² g⁻¹. The incorporation of nitrogen (N) and oxygen (O) heteroatoms further enhanced the electrochemical performance by generating pseudocapacitance and improving ion transport and wettability. The prepared supercapacitor demonstrated a high specific capacitance of 293 F g⁻¹ at a current density of 0.5 A g⁻¹, along with an excellent capacitance retention of 90.34 % after 10,000 charge/discharge cycles. These results highlight the exceptional electrochemical performance and long-term stability of the developed material.</div></div>","PeriodicalId":13872,"journal":{"name":"International Journal of Electrochemical Science","volume":"20 6","pages":"Article 101024"},"PeriodicalIF":1.3,"publicationDate":"2025-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143825697","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}